EP2632690B1 - Support for a mould bottom and an assembly for a moulding unit - Google Patents

Support for a mould bottom and an assembly for a moulding unit Download PDF

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Publication number
EP2632690B1
EP2632690B1 EP11787737.3A EP11787737A EP2632690B1 EP 2632690 B1 EP2632690 B1 EP 2632690B1 EP 11787737 A EP11787737 A EP 11787737A EP 2632690 B1 EP2632690 B1 EP 2632690B1
Authority
EP
European Patent Office
Prior art keywords
mould base
support
rod
male part
screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP11787737.3A
Other languages
German (de)
French (fr)
Other versions
EP2632690A1 (en
Inventor
Jean-Christophe Langlois
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sidel Participations SAS
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Sidel Participations SAS
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Publication of EP2632690A1 publication Critical patent/EP2632690A1/en
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Publication of EP2632690B1 publication Critical patent/EP2632690B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/54—Moulds for undercut articles
    • B29C49/541—Moulds for undercut articles having a recessed undersurface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4823—Moulds with incorporated heating or cooling means
    • B29C2049/4838—Moulds with incorporated heating or cooling means for heating moulds or mould parts
    • B29C2049/4846—Moulds with incorporated heating or cooling means for heating moulds or mould parts in different areas of the mould at different temperatures, e.g. neck, shoulder or bottom
    • B29C2049/4848—Bottom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C2049/4879—Moulds characterised by mould configurations
    • B29C2049/4892—Mould halves consisting of an independent main and bottom part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/54—Moulds for undercut articles
    • B29C2049/542—Moulds for undercut articles having means to facilitate the removal of the blow moulded articles
    • B29C2049/546—Moulds for undercut articles having means to facilitate the removal of the blow moulded articles by translatorilly actuating an auxiliary mould part while the mould is still in a closed position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/70—Removing or ejecting blown articles from the mould
    • B29C2049/701—Ejecting means
    • B29C2049/702—Air pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4823—Moulds with incorporated heating or cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/70—Removing or ejecting blown articles from the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles

Definitions

  • the invention relates to an improvement in the bottom support mold and in particular a mold bottom which is used in cooperation with half-molds for the manufacture of containers of thermoplastic material, bottles or other. It relates, more specifically, the support of the molding part of the mold bottom.
  • the support of the mold base generally comprises two parts which are secured by appropriate means: - a base on which is fixed said mold base and - a saddle on which said base is removably attached.
  • the harness is connected to the console, or frame, of the mold-carrier unit by means of guiding means to allow its vertical movement between two positions.
  • the saddle is indeed movable with respect to the two half-molds, between an active position which makes it possible to perform the molding operation of the container and an inactive position where it is set back from said half-molds, so as to allow evacuating the molded container from the molding unit.
  • the base of the mold base can be as described in the document FR 2,714,631 , in the form of a jack, which jack moves said mold bottom to perform a shaping operation of the bottle according to the so-called "boxing" method.
  • the present invention proposes, first of all, means for connecting the base to the mold base and,
  • the document WO 2007/082051 discloses a support for the molding part of a mold bottom as defined by the preamble of claim 1.
  • the present invention proposes, first of all, a means for connecting the base to the mold base and, in particular, in the case of a jack-shaped base, the invention proposes means for assembling the base. mold bottom, directly or indirectly, on the end of the rod of the jack which allows to maneuver said mold bottom.
  • the invention proposes such a means of assembly more convenient implementation.
  • the invention is remarkable in that it comprises the characteristics of the characterizing part of claim 1.
  • a locking rotation of the screw relative to the end of the rod is effected by means of a pin which is interposed between the screw and the end of the rod.
  • the end of the rod of the jack comprises means for centering and immobilizing the male part of the assembly system, which means consist of - an annular ring protruding and - d an eccentric locking pin, which male part has a circular groove cooperating with the inner surface of said ring and an orifice arranged appropriately to cooperate with said pin.
  • This arrangement has the advantage of improving the convenience of implementation of the assembly of the cylinder rod relative to the mold bottom. Indeed, the nut is easy to access because it surrounds the screw.
  • the nut being immobilized angularly with respect to the cylinder rod with the eccentric pin, the rotational drive of the nut relative to the cylinder rod causes the tightening or loosening of the screw with one hand .
  • the support comprises a wear ring which is integral with the body of the cylinder and form, with the outlet wall of the cylinder rod, a bowl which serves as a housing to accommodate the assembly system when said rod of the cylinder is in the retracted position.
  • the space between said wear ring and a shoulder arranged on the male portion of the assembly system is arranged to accommodate a shim system (s) which allows to adjust the useful stroke of said rod of said cylinder, depending needs.
  • one of the wedges acts as a washer, or buffer, damping, which wedge is made of polyurethane material, fixed by screw, for example, on the shoulder of the part Male assembly system.
  • the screw constituting the male part of the assembly system is shaped directly on the free surface of the mold base.
  • the screw constituting the male part of the assembly system is shaped on a sole which acts as an interface between said male part and, as the case may be, the mold bottom or a spacer which interposes between said sole and said mold bottom.
  • the sole which acts as an interface comprises arrangements in the form of channels for dispensing a fluid coolant in the mold bottom as well as, for example, air assist mold.
  • the nut is trapped in the end of the cylinder rod and
  • the support comprises a wedge system arranged between a ring integral with the body of the jack and a spacer integral with the bottom of the mold.
  • the male part which constitutes the screw of the assembly system comprises a collar which extends around said screw, which collar is arranged to receive a washer, made of material of the "nylon" type. which interposes between said flange and the nut to act as a nut brake.
  • the washer is preferably secured to said flange of the male part, that is to say on the bottom of the mold, or, as the case may be, on the soleplate which is associated with said mold bottom. or that is associated with the spacer.
  • the invention in another aspect, relates to a subset of a molding unit for forming a container of thermoplastic material, comprising a mold base including the molding portion of the molding unit for molding the bottom of the container, and a support above.
  • the figure 1 shows schematically and simplified a support for a bottom 1 of mold, which bottom 1 is part of a molding unit which comprises two half-molds 2 and 3, which half-molds cooperate, by means of jaws 4, with a ring 5 which is commonly called a wear ring.
  • This ring 5 makes it possible to lock the support on the half-molds 2 and 3 to carry out the stretch-blow molding operation of a preform in order to transform it into a container of the bottle, bottle or other kind.
  • This set consisting of half-molds 2 and 3, and the support, forms what is called the molding unit.
  • This molding unit comprises a bracket 6 on which are articulated the half-molds 2 and 3 and on which is installed the bottom support 1 of the mold.
  • This mold base support 1 is placed on a saddle 8 which is connected to the console 6, or built, by means of a plate 9.
  • This plate 9 is movable vertically between an active position which corresponds to the closure of the mold and which allows the molding operation and an inactive position which corresponds to the opening of said mold and which allows the evacuation of the bottle, for example.
  • the saddle 8 shown in fine phantom, has means 10 for rapid assembly to accommodate a base, which base is in the form of a cylinder 11, as described in the aforementioned FR patent, and the rod 12 of this cylinder 11 is linked, either directly or indirectly as is the case on the figure 1 at the bottom 1 of the mold.
  • This connection between the end of the rod 12 of the cylinder 11 and the bottom 1 of the mold is formed by means of an assembly system 13 which comprises a female part consisting of a nut 14 and a male part consisting of a screw 15 ; this assembly system 13 allows quick and convenient installation and disassembly of said mold bottom 1, as needed.
  • the nut 14 is installed on the end of the rod 12 of the cylinder 11; it is locked on this rod 12 by means of a rod 16, of the circlip type, which is housed in a semicircular groove arranged towards the end of said rod 12, and is immobilized in translation by means of a workpiece 17, in the form of an elastic annular seal, which is positioned in a semicircular groove also, located on said rod 12, under the receiving groove of said rod 16.
  • the immobilization of the nut 14 relative to the male part which comprises the screw 15 is carried out by means of a washer 19 of the lock washer type of suitable material of the "nylon" type.
  • This washer 19 is interposed between the nut 14 and a flange 20 made on the male part which comprises the screw 15, around this screw 15.
  • This washer 19 is sufficiently flexible to not to interfere with the direct tightening of the screw 15 on the end of the rod 12 of the cylinder 11.
  • the nut 14 is installed at the end of the rod 12 of the cylinder 11 and this end comprises an annular ring 22 for centering the male part which comprises the screw 15, which male part comprises a circular groove 23 and the central stub 24 of this male part is housed in said ring 22.
  • the centering of the male part on the end of the rod 12 of the jack is effected on the inner surface of the ring 22.
  • the indexing of the male part comprising the screw 15 and in particular the indexing of the mold base 1 with respect to the end of the rod 12 of the jack 11, is achieved by means of the pin 18, which pin 18 is installed on the end of said rod 12 and it cooperates with a bore 25 formed in the stub 24 of said male part.
  • FIG. 1 there is a central orifice located on the end of the rod 12 of the cylinder 11.
  • This central orifice 26 allows, for example, the supply of compressed air for the demolding assistance of the container, that is to say say the takeoff of the bottom of said container relative to the bottom 1 of the mold.
  • Two other orifices 27 and 28 allow, for example, the arrival and the return of a coolant whose role is to maintain the mold bottom 1 at a temperature suitable for carrying out the molding operation and / or as the case may be the boxing operation.
  • a sole 29 serving as an interface between the rod 12 of the cylinder and the bottom 1 of the mold.
  • This sole 29 comprises arrangements 27 'and 28' in the form of channels which allow the heat transfer fluid to be distributed in channels arranged on the bottom 1 of the mold and it also comprises an arrangement 26 'for effecting the introduction of the compressed air always towards one or more channels of this mold bottom 1.
  • This sole 29 can be directly associated with the bottom 1 of the mold or, as shown figure 1 receiving a part which acts as a spacer, which spacer 31 is interposed between said sole 29 and the bottom 1 of the mold.
  • the washer 19 which serves to brake the nut 14 interposes between said nut 14 and the flange 20 of the male part, which flange 20 is part of either the bottom 1 of the mold or the sole 29, which sole 29 can be associated with said mold bottom 1 or its spacer 31, as appropriate.
  • the assembly system 13, that is to say the nut 14 and the screw 15, is housed in a bowl 35 delimited by the wear ring 5 and the wall 36 of the cylinder 11 which is traversed by the rod 12, which bowl 35 accommodates said assembly system during the movements of the bottom 1 of the mold.
  • the stroke of the rod 12 of the cylinder 11 can advantageously be adjusted by means of a system of wedges such as those which appear figure 1 .
  • a wedge 40 in the form of a washer is positioned in excess on the wear ring 5, on its upper free surface, and another wedge 41 is installed on a shoulder 42 which can be arranged directly on the bottom 1 of mold or , as shown on the figure 1 at the level of the spacer 31 which is interposed between the sole plate 29 and said bottom 1 of mold.
  • This wedge system 40, 41 makes it possible to modulate, according to the thickness of the wedges 40 and 41, the stroke of the rod 12 of the jack 11 and, in particular, to modulate the displacement of the bottom 1 of the mold so as to control the race of the bottom 1.
  • the shim 41 is, for example, in the form of segment, or squarely a washer; it may be made of thermoplastic material to act as a damping buffer to absorb shocks during the movement of the rod 12 of the jack and in particular the shocks during retraction of said rod 12.
  • This wedge 41 is, for example, fixed by screw 43 on the shoulder 42 of the spacer 31 which is one of the elements of the male part of the assembly system.
  • the shim 40 is fixed by screw 44 on the ring 5 or directly on the cylinder 11 and is centered on said ring 5 by an internal collar 45 .

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Fluid-Damping Devices (AREA)
  • Legs For Furniture In General (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Description

L'invention concerne un perfectionnement au support de fond de moule et en particulier un fond de moule qui est utilisé en coopération avec des demi-moules pour la confection de récipients en matériau thermoplastique, bouteilles ou autres. Elle concerne, plus précisément, le support de la partie moulante du fond de moule.The invention relates to an improvement in the bottom support mold and in particular a mold bottom which is used in cooperation with half-molds for the manufacture of containers of thermoplastic material, bottles or other. It relates, more specifically, the support of the molding part of the mold bottom.

Le support du fond de moule comprend généralement deux parties qui sont solidarisées par des moyens appropriés : - un socle sur lequel est fixé ledit fond de moule et - une sellette sur laquelle ledit socle est fixé de façon amovible.The support of the mold base generally comprises two parts which are secured by appropriate means: - a base on which is fixed said mold base and - a saddle on which said base is removably attached.

La sellette est reliée à la console, ou bâti, de l'unité porte-moule par l'intermédiaire de moyens de guidage pour permettre son mouvement vertical entre deux positions. La sellette est en effet mobile par rapport aux deux demi-moules, entre une position active qui permet de réaliser l'opération de moulage du récipient et une position inactive où elle se situe en retrait par rapport auxdits demi-moules, de façon à permettre l'évacuation du récipient moulé hors de l'unité de moulage.The harness is connected to the console, or frame, of the mold-carrier unit by means of guiding means to allow its vertical movement between two positions. The saddle is indeed movable with respect to the two half-molds, between an active position which makes it possible to perform the molding operation of the container and an inactive position where it is set back from said half-molds, so as to allow evacuating the molded container from the molding unit.

Le socle du fond de moule peut se présenter, comme décrit dans le document FR 2 714 631 , sous la forme d'un vérin, lequel vérin permet de déplacer ledit fond de moule pour réaliser une opération de façonnage de la bouteille selon le procédé dit "de boxage".The base of the mold base can be as described in the document FR 2,714,631 , in the form of a jack, which jack moves said mold bottom to perform a shaping operation of the bottle according to the so-called "boxing" method.

Le document US 2008/283533 décrit également une unité de moulage d'un récipient.The document US 2008/283533 also discloses a molding unit of a container.

La présente invention propose, tout d'abord, un moyen permettant de relier le socle au fond de moule et, Le document WO 2007/082051 décrit un support de la partie moulante d'un fond de moule tel que défini par le préambule de la revendication 1.The present invention proposes, first of all, means for connecting the base to the mold base and, The document WO 2007/082051 discloses a support for the molding part of a mold bottom as defined by the preamble of claim 1.

La présente invention propose, tout d'abord, un moyen permettant de relier le socle au fond de moule et, en particulier, dans le cas d'un socle en forme de vérin, l'invention propose des moyens qui permettent d'assembler le fond de moule, directement ou indirectement, sur l'extrémité de la tige du vérin qui permet de manoeuvrer ledit fond de moule. L'invention propose notamment un tel moyen d'assemblage plus commode de mise en oeuvre.The present invention proposes, first of all, a means for connecting the base to the mold base and, in particular, in the case of a jack-shaped base, the invention proposes means for assembling the base. mold bottom, directly or indirectly, on the end of the rod of the jack which allows to maneuver said mold bottom. The invention proposes such a means of assembly more convenient implementation.

Cet aménagement original du support de fond de moule et en particulier la présence de ces moyens d'assemblage dudit fond de moule sur l'extrémité du vérin, permettent également de prévoir et d'installer des moyens qui offrent la possibilité de régler, en fonction des besoins, la course du vérin de façon à contrôler cette course. En limitant cette course au strict nécessaire, on améliore de façon significative les temps de cycles et en particulier le temps du cycle lié à cette opération de boxage.This original arrangement of the mold base support and in particular the presence of these assembly means of said mold bottom on the end of the cylinder, also allow to predict and install means that offer the possibility of adjusting, depending needs, the stroke of the cylinder so as to control this race. By limiting this race to the bare necessities, it significantly improves the cycle times and in particular the cycle time related to this boxing operation.

L'invention est remarquable en ce qu'elle comprend les caractéristiques de la partie caractérisante de la revendication 1.The invention is remarkable in that it comprises the characteristics of the characterizing part of claim 1.

Selon une disposition de l'invention, un verrouillage en rotation de la vis par rapport à l'extrémité de la tige s'effectue au moyen d'un pion qui est interposé entre la vis et l'extrémité de la tige.According to one embodiment of the invention, a locking rotation of the screw relative to the end of the rod is effected by means of a pin which is interposed between the screw and the end of the rod.

Selon une disposition de l'invention, l'extrémité de la tige du vérin comporte des moyens de centrage et d'immobilisation de la partie mâle du système d'assemblage, lesquels moyens sont constitués - d'une bague annulaire en saillie et - d'un pion de verrouillage excentré, laquelle partie mâle comporte une rainure circulaire coopérant avec la surface intérieure de ladite bague et un orifice aménagé de façon appropriée pour coopérer avec ledit pion. Cette disposition présente l'avantage d'améliorer la commodité de mise en oeuvre de l'assemblage de la tige de vérin par rapport au fond de moule. En effet, l'écrou est facile d'accès car il entoure la vis. De plus, l'écrou étant immobilisé angulairement par rapport à la tige de vérin grâce au pion excentré, l'entrainement en rotation de l'écrou par rapport à la tige de vérin provoque le serrage ou le desserrage de la vis avec une seule main.According to one embodiment of the invention, the end of the rod of the jack comprises means for centering and immobilizing the male part of the assembly system, which means consist of - an annular ring protruding and - d an eccentric locking pin, which male part has a circular groove cooperating with the inner surface of said ring and an orifice arranged appropriately to cooperate with said pin. This arrangement has the advantage of improving the convenience of implementation of the assembly of the cylinder rod relative to the mold bottom. Indeed, the nut is easy to access because it surrounds the screw. In addition, the nut being immobilized angularly with respect to the cylinder rod with the eccentric pin, the rotational drive of the nut relative to the cylinder rod causes the tightening or loosening of the screw with one hand .

Selon une disposition de l'invention, le support comprend une bague d'usure qui est solidaire du corps du vérin et forme, avec la paroi de sortie de la tige du vérin, une cuvette qui fait office de logement pour accueillir le système d'assemblage lorsque ladite tige du vérin est en position rétractée. L'espace qui règne entre ladite bague d'usure et un épaulement aménagé sur la partie mâle du système d'assemblage est aménagé pour accueillir un système de cale(s) qui permet de régler la course utile de ladite tige dudit vérin, en fonction des besoins.According to one embodiment of the invention, the support comprises a wear ring which is integral with the body of the cylinder and form, with the outlet wall of the cylinder rod, a bowl which serves as a housing to accommodate the assembly system when said rod of the cylinder is in the retracted position. The space between said wear ring and a shoulder arranged on the male portion of the assembly system is arranged to accommodate a shim system (s) which allows to adjust the useful stroke of said rod of said cylinder, depending needs.

Toujours selon l'invention, le système de cale(s) comprend :

  • une cale en forme de rondelle, aménagée pour être fixée sur la bague d'usure, en surépaisseur, et
  • une cale aménagée pour être fixée sur un épaulement de la partie mâle du système d'assemblage.
Still according to the invention, the shim system (s) comprises:
  • a wedge shaped washer, arranged to be fixed on the wear ring, extra thickness, and
  • a wedge arranged to be fixed on a shoulder of the male part of the assembly system.

Selon une autre disposition de l'invention, l'une des cales fait office de rondelle, ou tampon, d'amortissement, laquelle cale est réalisée en matériau du type polyuréthane, fixée par vis, par exemple, sur l'épaulement de la partie mâle du système d'assemblage.According to another embodiment of the invention, one of the wedges acts as a washer, or buffer, damping, which wedge is made of polyurethane material, fixed by screw, for example, on the shoulder of the part Male assembly system.

Selon une variante, la vis constituant la partie mâle du système d'assemblage est façonnée directement sur la surface libre du fond de moule.Alternatively, the screw constituting the male part of the assembly system is shaped directly on the free surface of the mold base.

Selon une autre variante, la vis constituant la partie mâle du système d'assemblage est façonnée sur une semelle qui fait office d'interface entre ladite partie mâle et, selon le cas, le fond de moule ou une entretoise qui s'interpose entre ladite semelle et ledit fond de moule.According to another variant, the screw constituting the male part of the assembly system is shaped on a sole which acts as an interface between said male part and, as the case may be, the mold bottom or a spacer which interposes between said sole and said mold bottom.

Toujours selon l'invention, la semelle qui fait office d'interface comporte des aménagements en forme de canaux pour réaliser la distribution d'un fluide caloporteur dans le fond de moule ainsi que, par exemple, de l'air d'aide au démoulage.Still according to the invention, the sole which acts as an interface comprises arrangements in the form of channels for dispensing a fluid coolant in the mold bottom as well as, for example, air assist mold.

Avantageusement, l'écrou est prisonnier de l'extrémité de la tige du vérin etAdvantageously, the nut is trapped in the end of the cylinder rod and

Avantageusement, le support comprend un système de cale aménagé entre une bague solidaire du corps du vérin et une entretoise solidaire du fond de moule.Advantageously, the support comprises a wedge system arranged between a ring integral with the body of the jack and a spacer integral with the bottom of the mold.

Selon une autre disposition préférentielle de l'invention, la partie mâle qui constitue la vis du système d'assemblage comporte une collerette qui s'étend autour de ladite vis, laquelle collerette est aménagée pour accueillir une rondelle, en matériau du genre "Nylon", qui s'interpose entre ladite collerette et l'écrou pour faire office de frein d'écrou.According to another preferred embodiment of the invention, the male part which constitutes the screw of the assembly system comprises a collar which extends around said screw, which collar is arranged to receive a washer, made of material of the "nylon" type. which interposes between said flange and the nut to act as a nut brake.

Toujours selon l'invention, la rondelle est, de préférence, solidarisée sur ladite collerette de la partie mâle, c'est-à-dire sur le fond de moule, ou, selon le cas sur la semelle qui est associée audit fond de moule ou qui est associée à l'entretoise.Still according to the invention, the washer is preferably secured to said flange of the male part, that is to say on the bottom of the mold, or, as the case may be, on the soleplate which is associated with said mold bottom. or that is associated with the spacer.

Selon un autre aspect, l'invention porte sur un sous-ensemble d'une unité de moulage pour réaliser le façonnage d'un récipient en matériau thermoplastique, comprenant un fond de moule incluant la partie moulante de l'unité de moulage destinée à mouler le fond du récipient, et un support précité.In another aspect, the invention relates to a subset of a molding unit for forming a container of thermoplastic material, comprising a mold base including the molding portion of the molding unit for molding the bottom of the container, and a support above.

Pour pouvoir être exécutée, l'invention est exposée de façon suffisamment claire et complète dans la description suivante qui, en plus, est accompagnée de dessins dans lesquels :

  • la figure 1 montre un support selon l'invention, représenté sous la forme de deux demi-vues : une demi-vue schématique à droite et une demi-vue en coupe à gauche ;
  • la figure 2 représente, de façon partielle et en perspective, le socle en forme de vérin, lequel vérin comporte, sur l'extrémité de sa tige, la partie femelle du système d'assemblage qui relie le fond de moule à l'extrémité de ladite tige de vérin ;
  • la figure 3 représente, de façon partielle également, la partie mâle du système d'assemblage, tel qu'elle est aménagée sur le fond de moule, ou sur une semelle qui fait office d'interface, par exemple ;
  • la figure 4 représente une semelle, en perspective et montre sa surface qui est aménagée pour accueillir différents types de fonds de moule dont un fond de moule qui reçoit, notamment, un fluide caloporteur.
In order to be executed, the invention is set forth in a sufficiently clear and complete manner in the following description which, in addition, is accompanied by drawings in which:
  • the figure 1 shows a support according to the invention, represented in the form of two half-views: a schematic half-view on the right and a half-view in section on the left;
  • the figure 2 is partially and in perspective, the jack-shaped base, which cylinder comprises, on the end of its rod, the female part of the assembly system which connects the mold bottom to the end of said rod; cylinder;
  • the figure 3 represents, partially also, the male part of the assembly system, such as that it is arranged on the bottom of the mold, or on a sole that acts as an interface, for example;
  • the figure 4 represents a sole, in perspective and shows its surface which is arranged to accommodate different types of mold bottoms including a mold bottom which receives, in particular, a heat transfer fluid.

La figure 1 montre, de façon schématique et simplifiée, un support pour un fond 1 de moule, lequel fond 1 fait partie d'une unité de moulage qui comprend deux demi-moules 2 et 3, lesquels demi-moules coopèrent, au moyen de mors 4, avec une bague 5 qui est couramment appelée bague d'usure. Cette bague 5 permet de verrouiller le support sur les demi-moules 2 et 3 pour réaliser l'opération d'étirage-soufflage d'une préforme afin de la transformer en récipient du genre bouteille, flacon ou autres.The figure 1 shows schematically and simplified a support for a bottom 1 of mold, which bottom 1 is part of a molding unit which comprises two half-molds 2 and 3, which half-molds cooperate, by means of jaws 4, with a ring 5 which is commonly called a wear ring. This ring 5 makes it possible to lock the support on the half-molds 2 and 3 to carry out the stretch-blow molding operation of a preform in order to transform it into a container of the bottle, bottle or other kind.

Cet ensemble constitué des demi-moules 2 et 3, et du support, forme ce qui est appelé l'unité de moulage. Cette unité de moulage comprend une console 6 sur laquelle sont articulés les demi-moules 2 et 3 et sur laquelle est installé le support de fond 1 de moule.This set consisting of half-molds 2 and 3, and the support, forms what is called the molding unit. This molding unit comprises a bracket 6 on which are articulated the half-molds 2 and 3 and on which is installed the bottom support 1 of the mold.

Ce support de fond 1 de moule est posé sur une sellette 8 qui est liée à la console 6, ou bâti, au moyen d'une platine 9. Cette platine 9 est mobile verticalement entre une position active qui correspond à la fermeture du moule et qui permet l'opération de moulage et une position inactive qui correspond à l'ouverture dudit moule et qui permet l'évacuation de la bouteille, par exemple.This mold base support 1 is placed on a saddle 8 which is connected to the console 6, or built, by means of a plate 9. This plate 9 is movable vertically between an active position which corresponds to the closure of the mold and which allows the molding operation and an inactive position which corresponds to the opening of said mold and which allows the evacuation of the bottle, for example.

La sellette 8, représentée en traits mixtes fins, comporte des moyens 10 d'assemblage rapide pour accueillir un socle, lequel socle se présente sous la forme d'un vérin 11, comme décrit dans le brevet FR précité, et la tige 12 de ce vérin 11 est liée, soit directement, soit indirectement comme c'est le cas sur la figure 1, au fond 1 de moule.The saddle 8, shown in fine phantom, has means 10 for rapid assembly to accommodate a base, which base is in the form of a cylinder 11, as described in the aforementioned FR patent, and the rod 12 of this cylinder 11 is linked, either directly or indirectly as is the case on the figure 1 at the bottom 1 of the mold.

Cette liaison entre l'extrémité de la tige 12 du vérin 11 et le fond 1 de moule est réalisée au moyen d'un système 13 d'assemblage qui comprend une partie femelle constituée d'un écrou 14 et une partie mâle qui est constituée d'une vis 15 ; ce système 13 d'assemblage permet un montage et un démontage rapides et surtout commodes dudit fond 1 de moule, en fonction des besoins.This connection between the end of the rod 12 of the cylinder 11 and the bottom 1 of the mold is formed by means of an assembly system 13 which comprises a female part consisting of a nut 14 and a male part consisting of a screw 15 ; this assembly system 13 allows quick and convenient installation and disassembly of said mold bottom 1, as needed.

De préférence, l'écrou 14 est installé sur l'extrémité de la tige 12 du vérin 11 ; il est verrouillé sur cette tige 12 au moyen d'un jonc 16, du genre circlip, qui se loge dans une gorge semi-circulaire aménagée vers l'extrémité de ladite tige 12, et il est immobilisé en translation au moyen d'une pièce 17, en forme de joint annulaire élastique, qui est positionné dans une gorge semi-circulaire également, située sur ladite tige 12, sous la gorge d'accueil dudit jonc 16.Preferably, the nut 14 is installed on the end of the rod 12 of the cylinder 11; it is locked on this rod 12 by means of a rod 16, of the circlip type, which is housed in a semicircular groove arranged towards the end of said rod 12, and is immobilized in translation by means of a workpiece 17, in the form of an elastic annular seal, which is positioned in a semicircular groove also, located on said rod 12, under the receiving groove of said rod 16.

Les détails du centrage de la vis 15 par rapport à l'extrémité de la tige 12 du vérin 11 et les détails du verrouillage en rotation de cette vis apparaissent aussi figures 2 et 3. Le verrouillage en rotation de la vis 15 par rapport à l'extrémité de la tige 12 s'effectue au moyen d'un pion 18 qui est interposé entre les deux.The details of the centering of the screw 15 with respect to the end of the rod 12 of the jack 11 and the details of the locking in rotation of this screw also appear. Figures 2 and 3 . The locking in rotation of the screw 15 relative to the end of the rod 12 is effected by means of a pin 18 which is interposed between the two.

L'immobilisation de l'écrou 14 par rapport à la partie mâle qui comporte la vis 15 est réalisée au moyen d'une rondelle 19 du type rondelle frein en matériau approprié du genre « Nylon ». Cette rondelle 19 s'interpose entre l'écrou 14 et une collerette 20 réalisée sur la partie mâle qui comporte la vis 15, autour de cette vis 15. Cette rondelle 19 est suffisamment souple pour ne pas interférer avec le serrage direct de la vis 15 sur l'extrémité de la tige 12 du vérin 11.The immobilization of the nut 14 relative to the male part which comprises the screw 15 is carried out by means of a washer 19 of the lock washer type of suitable material of the "nylon" type. This washer 19 is interposed between the nut 14 and a flange 20 made on the male part which comprises the screw 15, around this screw 15. This washer 19 is sufficiently flexible to not to interfere with the direct tightening of the screw 15 on the end of the rod 12 of the cylinder 11.

Comme représenté figures 2 et 3, en perspective, d'une façon plus détaillée, l'écrou 14 est installé à l'extrémité de la tige 12 du vérin 11 et cette extrémité comporte une bague 22 annulaire pour réaliser le centrage de la partie mâle qui comporte la vis 15, laquelle partie mâle comprend une rainure 23 circulaire et le moignon 24 central de cette partie mâle se loge dans ladite bague 22. Le centrage de la partie mâle sur l'extrémité de la tige 12 du vérin s'effectue sur la surface interne de la bague 22.As shown Figures 2 and 3 , in perspective, in more detail, the nut 14 is installed at the end of the rod 12 of the cylinder 11 and this end comprises an annular ring 22 for centering the male part which comprises the screw 15, which male part comprises a circular groove 23 and the central stub 24 of this male part is housed in said ring 22. The centering of the male part on the end of the rod 12 of the jack is effected on the inner surface of the ring 22.

L'indexage de la partie mâle comportant la vis 15 et en particulier l'indexage du fond 1 de moule par rapport à l'extrémité de la tige 12 du vérin 11, est réalisé au moyen du pion 18, lequel pion 18 est installé sur l'extrémité de ladite tige 12 et il coopère avec un alésage 25 réalisé dans le moignon 24 de ladite partie mâle.The indexing of the male part comprising the screw 15 and in particular the indexing of the mold base 1 with respect to the end of the rod 12 of the jack 11, is achieved by means of the pin 18, which pin 18 is installed on the end of said rod 12 and it cooperates with a bore 25 formed in the stub 24 of said male part.

Sur ces figures 2 et 3, on remarque un orifice central situé sur l'extrémité de la tige 12 du vérin 11. Cet orifice 26 central permet, par exemple, l'amenée d'air comprimé pour l'aide au démoulage du récipient, c'est-à-dire le décollage du fond dudit récipient par rapport au fond 1 de moule. Deux autres orifices 27 et 28 permettent, par exemple, l'arrivée et le retour d'un fluide caloporteur dont le rôle est de maintenir le fond 1 de moule à une température appropriée pour réaliser l'opération de moulage et/ou selon le cas l'opération de boxage.On these Figures 2 and 3 , there is a central orifice located on the end of the rod 12 of the cylinder 11. This central orifice 26 allows, for example, the supply of compressed air for the demolding assistance of the container, that is to say say the takeoff of the bottom of said container relative to the bottom 1 of the mold. Two other orifices 27 and 28 allow, for example, the arrival and the return of a coolant whose role is to maintain the mold bottom 1 at a temperature suitable for carrying out the molding operation and / or as the case may be the boxing operation.

Ces orifices se retrouvent sur la partie mâle constituant la vis 15, laquelle partie mâle peut aussi être constituée, comme délimitée figure 3 en traits mixtes fins et comme représentée figure 4, d'une semelle 29 faisant office d'interface entre la tige 12 du vérin et le fond 1 de moule. Cette semelle 29 comporte des aménagements 27' et 28' en forme de canaux qui permettent de distribuer le fluide caloporteur dans des canaux aménagés sur le fond 1 de moule et elle comporte aussi un aménagement 26' pour réaliser l'introduction de l'air comprimé, toujours vers un ou plusieurs canaux de ce fond 1 de moule.These orifices are found on the male part constituting the screw 15, which male part can also be constituted as delimited figure 3 in phantom purposes and as represented figure 4 , a sole 29 serving as an interface between the rod 12 of the cylinder and the bottom 1 of the mold. This sole 29 comprises arrangements 27 'and 28' in the form of channels which allow the heat transfer fluid to be distributed in channels arranged on the bottom 1 of the mold and it also comprises an arrangement 26 'for effecting the introduction of the compressed air always towards one or more channels of this mold bottom 1.

Cette semelle 29 peut être directement associée au fond 1 de moule ou, comme représenté figure 1, recevoir une pièce qui fait office d'entretoise, laquelle entretoise 31 est interposée entre ladite semelle 29 et le fond 1 de moule.This sole 29 can be directly associated with the bottom 1 of the mold or, as shown figure 1 receiving a part which acts as a spacer, which spacer 31 is interposed between said sole 29 and the bottom 1 of the mold.

La rondelle 19 qui permet de freiner l'écrou 14 s'interpose entre ledit écrou 14 et la collerette 20 de la partie mâle, laquelle collerette 20 fait partie soit du fond 1 de moule, soit de la semelle 29, laquelle semelle 29 pouvant être associée audit fond 1 de moule ou à son entretoise 31, selon le cas.The washer 19 which serves to brake the nut 14 interposes between said nut 14 and the flange 20 of the male part, which flange 20 is part of either the bottom 1 of the mold or the sole 29, which sole 29 can be associated with said mold bottom 1 or its spacer 31, as appropriate.

Le serrage de l'écrou 14 est possible grâce à l'immobilisation de la vis 15, laquelle vis 15 est maintenue fixe par une chaîne d'éléments qui se termine sur la console 6, c'est-à-dire sur le bâti de l'unité porte-moule. Cette chaîne d'éléments qui va de la vis 15 à la console 6 comprend, dans l'ordre, le pion 18, la tige 12 du vérin 21, le piston 32 dudit vérin 21 et des conduits 33 qui sont solidaires dudit piston 32 et qui coulissent dans le couvercle 34 dudit vérin 11. Cette conception originale du support est décrite dans la demande PCT/FR2010/050909 .The tightening of the nut 14 is possible thanks to the immobilization of the screw 15, which screw 15 is held fixed by a chain of elements which ends on the bracket 6, that is to say on the frame of the mold holder unit. This chain of elements which goes from the screw 15 to the console 6 comprises, in order, the pin 18, the rod 12 of the jack 21, the piston 32 of said jack 21 and the ducts 33 which are integral with said piston 32 and which slide in the cover 34 of said cylinder 11. This original design of the support is described in the application PCT / FR2010 / 050909 .

Le système 13 d'assemblage, c'est-à-dire l'écrou 14 et la vis 15, se loge dans une cuvette 35 délimitée par la bague 5 d'usure et par la paroi 36 du vérin 11 qui est traversée par la tige 12, laquelle cuvette 35 permet de loger ledit système d'assemblage lors des mouvements du fond 1 de moule.The assembly system 13, that is to say the nut 14 and the screw 15, is housed in a bowl 35 delimited by the wear ring 5 and the wall 36 of the cylinder 11 which is traversed by the rod 12, which bowl 35 accommodates said assembly system during the movements of the bottom 1 of the mold.

La course de la tige 12 du vérin 11 peut avantageusement être réglée au moyen d'un système de cales comme celles qui apparaissent figure 1.The stroke of the rod 12 of the cylinder 11 can advantageously be adjusted by means of a system of wedges such as those which appear figure 1 .

Ainsi, une cale 40 en forme de rondelle est positionnée en surépaisseur sur la bague 5 d'usure, sur sa surface supérieure libre, et une autre cale 41 est installée sur un épaulement 42 qui peut être aménagé directement sur le fond 1 de moule ou, comme représenté sur la figure 1, au niveau de l'entretoise 31 qui est interposée entre la semelle 29 et ledit fond 1 de moule.Thus, a wedge 40 in the form of a washer is positioned in excess on the wear ring 5, on its upper free surface, and another wedge 41 is installed on a shoulder 42 which can be arranged directly on the bottom 1 of mold or , as shown on the figure 1 at the level of the spacer 31 which is interposed between the sole plate 29 and said bottom 1 of mold.

Ce système de cales 40, 41, permet de moduler, selon l'épaisseur des cales 40 et 41, la course de la tige 12 du vérin 11 et, en particulier, de moduler le déplacement du fond 1 de moule de façon à contrôler la course de ce fond 1. En contrôlant la course de la tige 12 du vérin 11, on optimise le temps nécessaire à la réalisation de l'opération de boxage et on optimise le cycle de boxage et le cycle de fabrication de la bouteille.This wedge system 40, 41 makes it possible to modulate, according to the thickness of the wedges 40 and 41, the stroke of the rod 12 of the jack 11 and, in particular, to modulate the displacement of the bottom 1 of the mold so as to control the race of the bottom 1. By controlling the stroke of the rod 12 of the cylinder 11, optimizes the time required to perform the boxing operation and optimizes the boxing cycle and the bottle manufacturing cycle.

Ainsi, à titre d'exemple, on peut avoir une course maximale de 20 mm pour le fond 1 de moule, sans utiliser de cales, et avoir une course choisie, réglée selon les besoins, et à volonté, par un choix approprié au niveau de l'épaisseur des cales 40 et 41 qui sont utilisées.Thus, by way of example, it is possible to have a maximum stroke of 20 mm for the bottom 1 of the mold, without using shims, and to have a chosen stroke, adjusted as required, and at will, by a suitable choice at the the thickness of the shims 40 and 41 which are used.

La cale 41 se présente, par exemple, sous la forme de segment, ou carrément d'une rondelle ; elle peut être réalisée en matériau thermoplastique pour faire office de tampon amortisseur afin d'encaisser les chocs lors du mouvement de la tige 12 du vérin et en particulier les chocs lors de la rétraction de ladite tige 12. Cette cale 41 est, par exemple, fixée par vis 43 sur l'épaulement 42 de l'entretoise 31 qui constitue l'un des éléments de la partie mâle du système d'assemblage.The shim 41 is, for example, in the form of segment, or squarely a washer; it may be made of thermoplastic material to act as a damping buffer to absorb shocks during the movement of the rod 12 of the jack and in particular the shocks during retraction of said rod 12. This wedge 41 is, for example, fixed by screw 43 on the shoulder 42 of the spacer 31 which is one of the elements of the male part of the assembly system.

La cale 40 est fixée par vis 44 sur la bague 5 ou directement sur le vérin 11 et elle est centrée sur ladite bague 5 par une collerette 45 interne.The shim 40 is fixed by screw 44 on the ring 5 or directly on the cylinder 11 and is centered on said ring 5 by an internal collar 45 .

Claims (13)

  1. Support for the moulding portion of a mould base cooperating with half-moulds of a moulding unit to shape a container of thermoplastic material, said support comprising:
    - an actuating cylinder (11) including a rod (12) solidly connected to said mould base (1) and a body that can be locked onto the half-moulds (2, 3) of said moulding unit,
    - a carriage (8) placed between said actuating cylinder (11) and a bracket (6) of said moulding unit, and,
    - an assembly system (13) between said rod (12) of the actuating cylinder (11) and said mould base (1), the assembly system (13) consisting of a female part in the form of a nut (14), and a male part in the form of a screw (15),
    characterized in that the screw (15) is associated directly or indirectly with the mould base (1), and in that the end of the rod (12) of the actuating cylinder (11) comprises means for centering and immobilizing the male part of the assembly system (13), said means comprising a protruding annular ring (22) and an off-centered locking pin (18), and in that the male part comprises a circular groove (23) cooperating with the inside surface of said ring (22) and an opening (25) arranged in a manner appropriate for cooperating with said pin (18).
  2. Support for the moulding portion of a mould base according to claim 1, characterized in that the screw (15) is rotationally locked relative to the end of the rod (12) by means of a pin (18) which is placed between the screw and the end of the rod.
  3. Support for the moulding portion of a mould base according to claim 1 or 2, characterized in that it comprises a wear ring (5) which is solidly connected to the body of the actuating cylinder (11), said wear ring (5) forming, with the exit wall (36) of the rod (12) of said actuating cylinder, a recess (35) which serves to house the assembly system (13) when said rod (12) of said actuating cylinder (11) is in the retracted position, and in that it comprises a system of shim(s) (40, 41) which allows adjusting the working stroke of said rod (12) of said actuating cylinder (11) according to requirements, said system of shim(s) being accommodated in a space which extends between said wear ring (5) and a shoulder (42) arranged on the male part of said assembly system (13).
  4. Support for the moulding portion of a mould base according to claim 3, characterized in that the system of shim(s) comprises: - a shim (40) in washer form, arranged for attachment to the free portion of the wear ring (5) so as to add additional thickness, and a shim (41) arranged for attachment to a shoulder (42) of the male part of the assembly system (13).
  5. Support for the moulding portion of a mould base according to claim 4, characterized in that the shim (41) acts as a damping washer or pad, said shim (41) being made of polyurethane-type material and being attached by screw (43) to the shoulder (42) of the male part of the assembly system.
  6. Support for the moulding portion of a mould base according to any of claims 1 to 5, characterized in that the screw (15) constituting the male part of the assembly system (13) is formed directly on the free surface of the mould base (1).
  7. Support for the moulding portion of a mould base according to any of claims 1 to 5, characterized in that the screw (15) constituting the male part of the assembly system (13) is formed on a sole plate (29) which acts as an interface between said male part and, depending on the case, the mould base (1) or a spacer (31) which is placed between said sole plate (29) and said mould base (1).
  8. Support for the moulding portion of a mould base according to claim 7, characterized in that the sole plate (29), which acts as an interface, comprises arrangements (27' and 28') in the form of channels, for distributing a heat transfer fluid into the mould base (1) as well as, for example, an arrangement (26') for supplying the air to assist with unmoulding.
  9. Support for the moulding portion of a mould base according to any of claims 1 to 8, characterized in that the nut (14) is a captive nut at the end of the rod (12) of the actuating cylinder (11).
  10. Support for the moulding portion of a mould base according to claims 1 or 2, characterized in that it comprises a shim system (40, 41) arranged between a ring (5) solidly connected to the body of the actuating cylinder (11) and a spacer (31) solidly connected to the mould base (1).
  11. Support for the moulding portion of a mould base according to any of claims 1 to 10, characterized in that the male part which constitutes the screw (15) comprises a collar (20) which extends around said screw (15), said collar (20) being arranged to accept a washer (19), of a "Nylon"-type material, which is placed between said collar (20) and the nut (14) in order to act as a locking washer.
  12. Support for the moulding portion of a mould base according to claim 11, characterized in that the washer (19) is solidly connected to said collar (20) of the male part, meaning to the mould base (1), or, depending on the case, to the sole plate (29) which is associated with said mould base (1) or with the spacer (31).
  13. Sub-assembly of a moulding unit for forming a container of thermoplastic material, characterized by its comprising:
    - a mould base (1) including the moulding portion of the moulding unit intended for moulding the base of the container, and
    - a support according to any one of the above claims.
EP11787737.3A 2010-10-26 2011-10-26 Support for a mould bottom and an assembly for a moulding unit Not-in-force EP2632690B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1058787A FR2966374B1 (en) 2010-10-26 2010-10-26 IMPROVEMENT IN THE MOLDING BOTTOM SUPPORT FOR THE SHAPING OF A THERMOPLASTIC CONTAINER
PCT/FR2011/052496 WO2012056168A1 (en) 2010-10-26 2011-10-26 Improvement to a mould base support

Publications (2)

Publication Number Publication Date
EP2632690A1 EP2632690A1 (en) 2013-09-04
EP2632690B1 true EP2632690B1 (en) 2014-08-13

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US (1) US9004897B2 (en)
EP (1) EP2632690B1 (en)
FR (1) FR2966374B1 (en)
MX (1) MX2013004676A (en)
WO (1) WO2012056168A1 (en)

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EP3113926B1 (en) 2014-03-03 2018-12-05 Amcor Group GmbH Blow molding machine
FR3019486B1 (en) * 2014-04-02 2016-12-23 Sidel Participations MANUFACTURING METHOD AND MOLDING UNIT OF CONTAINERS WITH LARGE BOXING RUN
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FR2966374A1 (en) 2012-04-27
MX2013004676A (en) 2013-05-14
EP2632690A1 (en) 2013-09-04
US20130224325A1 (en) 2013-08-29
FR2966374B1 (en) 2014-06-27
US9004897B2 (en) 2015-04-14
WO2012056168A1 (en) 2012-05-03

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